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Cap_Extend Click

• CIC Prefix : CAPEXTEND
• Author : MikroE Team
• Verison : 1.0.0
• Date : feb 2018.

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Software Support

We provide a library for the Cap_Extend Click on our LibStock page, as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

Library Description

Library cover all functionalities of the module. It carries specific functions for each important feature of the click board.

Key functions :

• int8_t capextend_is_button_pressed(uint8_t button) - Check is button pressed
• int8_t capextend_set_spm_cap_threshold( uint8_t cap, uint8_t threshold ) - Cap Extend SPM CAP Threshold
• int8_t capextend_set_spm_cap_sensitivity( uint8_t cap, uint8_t sensitivity ) - Cap Extend SPM CAP Sensitivity

Examples Description

The application is composed of three sections :

• System Initialization - GPIO and I2C module initialization
• Application Initialization - Click driver initialization
• Application Task - Detects the state of all 12 capacitive buttons and displays their state via UART. Operation is repeated each one second.

void applicationTask()
{
    msb = capextend_read_msb_buttons();
    lsb = capextend_read_lsb_buttons();
    ByteToHex(lsb,text);
    mikrobus_logWrite("Hex representation of lsb: ",_LOG_TEXT);
    mikrobus_logWrite(text,_LOG_LINE);
    ByteToHex(msb,text);
    mikrobus_logWrite("Hex representation of msb: ",_LOG_TEXT);
    mikrobus_logWrite(text,_LOG_LINE);
    Delay_ms(1000);
}

The full application code, and ready to use projects can be found on our LibStock page.

mikroE Libraries used in the example:

• I2C
• UART

Additional notes and informations

Depending on the development board you are using, you may need USB UART click, USB UART 2 Click or RS232 Click to connect to your PC, for development systems with no UART to USB interface available on the board. The terminal available in all Mikroelektronika compilers, or any other terminal application of your choice, can be used to read the message.

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